References
1888, acetone, crater, cybermat, Earth, Glasgow, gravity, Gravitron, Hawaii, hurricane, International Space Control, Joseph Lister, Mars, oxygen, Pacific Ocean, Phantom Piper, plastic, spacesuit, sugar, virus
Cast
- The Doctor - Patrick Troughton
- Ben Jackson - Michael Craze
- Polly - Anneke Wills
- Jamie McCrimmon - Frazer Hines
- Hobson - Patrick Barr
- Benoit - Andre Maranne
- Nils - Michael Wolf
- Sam - John Rolfe
- Voice from Space Control - Alan Rowe
- Ralph - Mark Heath
- Dr. Evans - Alan Rowe
- Scientists - Barry Ashton, Derek Calder, Arnold Chazen, Leon Maybank, Victor Pemberton, Edward Phillips, Ron Pinnell, Robin Scott, Alan Wells
- Voice of Controller Rinberg - Denis McCarthy
- Cybermen - John Wills, Sonnie Willis, Peter Greene, Keith Goodman, Reg Whitehead
- Cybermen Voices - Peter Hawkins